You can disable Instant Search by going to http://www.google.com/preferences and selecting "Never show Instant results.".

Or, you could set "I'm Feeling Lucky" to be Chrome's default search: http://productforums.google.com/forum/#!msg/chrome/pDpfTIoSa... . Basically, you add "btnl=I%27m+Feeling+Lucky" to the Google search URL.